نتایج جستجو برای: روش ماتریس انتقال tmm

تعداد نتایج: 391073  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

قسمت اول: برای توصیف یک تصویر کامل از ساختار الکترونیfe3 ، ماهیت باندهای شیمیائی در این ساختار بوسیله دو متد اوربیتال طبیعی پیوندی (nbo)و تئوری رزونانس (nrt) مورد بررسی قرار میگیرد. نتایج نشان میدهد که فاکتور اصلی حاکم بر ساختار الکترونی این کلاستر ماهیت نامستقر الکترونهای والانس است. دراین رابطه، ساختار بسیار غیر اشباع این کلاستر فلزی و لیست "انتقال بار" در nbo احتمال حضورساختارهای رزونانسی را...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2009
Jimie Siew Mei Lim Sum Pei Tang Chong Huat Siar

BACKGROUND Conventional methods for writing case notes detailing the progress of oral lichen planus (OLP), a precancerous condition that requires long-term surveillance, is both time-consuming and tedious for the busy clinician. OBJECTIVES To design and perform a simple surveillance on OLP patients based on colour-coded topography mouth maps (TMM). MATERIALS AND METHODS Three colour-coded T...

Journal: :The Plant cell 1995
M Yang F D Sack

Stomata regulate gas exchange through the aerial plant epidermis by controlling the width of a pore bordered by two guard cells. Little is known about the genes that regulate stomatal development. We screened cotyledons from ethyl methanesulfonate-mutagenized seeds of Arabidopsis by light microscopy to identify mutants with altered stomatal morphology. Two mutants, designated too many mouths (t...

Journal: :CoRR 2012
Antoine Lefebvre Gary P. Scavone Jean Kergomard

Abstract The classical Transfer-Matrix Method (TMM) is often used to calculate the input impedance of woodwind instruments. However, the TMM ignores the possible influence of the radiated sound from toneholes on other open holes. In this paper a method is proposed to account for external tonehole interactions. We describe the Transfer-Matrix Method with external Interaction (TMMI) and then comp...

1998
Jiabo Li Sharon E. Worthington Christopher J. Cramer

Organic molecules characterized by high-spin ground states are of interest for many reasons, including their potential use as spin reservoirs in ferromagnetic organic materials. For the design of high-spin organic molecules having an even number of electrons, one typically tries to take advantage of Hund’s rule 4 in constructing systems biased towards having triplet ground states. That is, one ...

ژورنال: :پژوهش فیزیک ایران 0
حسین میلانی مقدم h milani moghaddam university of ferdowsi of mashhad, mashhad, iranدانشکده علوم پایه و مرکز نانو تکنولوژی دانشگاه فردوسی مشهد سید احمد کتابی s a ketabi damghan university of basic sciences, damghan, iranدانشگاه علوم پایه دامغان ناصر شاه طهماسبی n shahtahmasebi university of ferdowsi of mashhad, mashhad, iranدانشکده علوم پایه و مرکز نانو تکنولوژی دانشگاه فردوسی مشهد

ما در این مقاله با استفاده از یک مدل بستگی قوی و روش ماتریس انتقال، اثر تغییر طول مولکول و قدرت پیوندگاه مولکول- نانو لوله کربن ( cnt ) را بر گسیل الکترون از سیستم cnt / مولکول منفرد/ cnt به صورت عددی بررسی می کنیم. با پلی استیلن در فاز ترانس ( trans -pa ) به عنوان مولکول، خواص رسانندگی سیستم را در چارچوب روش لانداور ( landauer ) مطالعه می کنیم. محاسبات ما نشان می دهند که در این ساختارها، رسانن...

1999
Paul G. Wenthold Jun Hu Robert R. Squires W. Carl Lineberger

The photoelectron spectrum of the trimethylenemethane (TMM) negative ion is described. The electron affinity of TMM is found from the spectrum to be 0.431 6 0.006 eV, and the energy difference between the X̃ A9 2 and b̃ A1 states of TMM is determined to be 16.1 6 0.2 kcal/mol. The energy difference between the lowest energy triplet and singlet states is estimated to be 13–16 kcal/mol. The enthalp...

2008
Shahram Golzari Shyamala C. Doraisamy Noris Mohd. Norowi Md Nasir Sulaiman Nur Izura Udzir

Machine learning techniques for automated musical genre classification are currently widely studied. With large collections of digital musical files, one approach to classification is to classify by musical genres such as pop, rock and classical in Western music. Beat, pitch and temporal related features are extracted from audio signals and various machine learning algorithms are applied for cl...

Journal: :Genes & development 2012
Jin Suk Lee Takeshi Kuroha Marketa Hnilova Dmitriy Khatayevich Masahiro M Kanaoka Jessica M McAbee Mehmet Sarikaya Candan Tamerler Keiko U Torii

Valves on the plant epidermis called stomata develop according to positional cues, which likely involve putative ligands (EPIDERMAL PATTERNING FACTORS [EPFs]) and putative receptors (ERECTA family receptor kinases and TOO MANY MOUTHS [TMM]) in Arabidopsis. Here we report the direct, robust, and saturable binding of bioactive EPF peptides to the ERECTA family. In contrast, TMM exhibits negligibl...

2008
Shyamala C. Doraisamy Shahram Golzari Noris Mohd. Norowi Md Nasir Sulaiman Nur Izura Udzir

Machine learning techniques for automated musical genre classification is currently widely studied. With large collections of digital musical files, one approach to classification is to classify by musical genres such as pop, rock and classical in Western music. Beat, pitch and temporal related features are extracted from audio signals and various machine learning algorithms are applied for cla...

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